Whitehead's Swiftlet vs Chestnut-collared Swift
Aerodramus whiteheadi compared with Streptoprocne rutila
Side-by-Side Comparison
| Attribute | Whitehead's Swiftlet | Chestnut-collared Swift |
|---|---|---|
| Scientific Name | Aerodramus whiteheadi | Streptoprocne rutila |
| Order | Caprimulgiformes | Caprimulgiformes |
| Family | Apodidae | Apodidae |
| Conservation Status | Data Deficient | Least Concern |
| Length | — | — |
| Wingspan | 27.2 cm (10.7 in) | 26.0 cm (10.2 in) |
| Weight | 14.0 g (0.49 oz) | 21.8 g (0.77 oz) |
| Diet | Aerial plankton feeder taking tiny midges, fungus gnats, and ballooning spiders in rapid coursing flights. | Entirely airborne feeder on tiny flies, gnats, and airborne arachnids; one of the most aerial … |
| Clutch Size | -- | 2 |
| Population Trend | — | — |
Habitat Comparison
Song & Call Comparison
Whitehead's Swiftlet
Thin twittering; 'chip-chip' calls over Borneo highlands; echolocation clicks in cave roosts; data deficient; calls poorly documented from remote Bornean montane habitat
Chestnut-collared Swift
High, screaming trill; rapid 'scree-scree' in flight; shrill and penetrating; calls over Neotropical mountains and canyon edges; alarm a rapid screeching chatter
Geographic Range & Migration
Whitehead's Swiftlet
Endemic to the highlands of Borneo at 800–3,000 m. Resident in montane forest on Mount Kinabalu and the Crocker Range.
Chestnut-collared Swift
Found from Mexico and the Caribbean south through Central America and South America to Argentina. Resident in highlands near mountain cliffs.
Conservation Status
Whitehead's Swiftlet
Chestnut-collared Swift
How to Tell Them Apart
Whitehead's Swiftlet
Small; dark brownish-grey upperparts; pale buff-grey rump band; underparts pale grey-white; forked tail; Philippine endemic from Luzon; data-deficient species differing from Philippine Swiftlet mainly in habitat preference and island range.
Chestnut-collared Swift
Dark blackish-brown body with diagnostic rich chestnut collar encircling entire neck; collar bold and complete; underparts slightly paler brown; small swift with striking warm-toned neck band contrasting vividly with dark …
About These Birds
Whitehead's Swiftlet
A small swiftlet (11-12 cm) endemic to the mountains of northern Luzon, Philippines. Dark plumage with a pale rump. Aerial insectivore of montane forest canopy above 1,000 m. Colonial cave nester using echolocation. Named after John Whitehead. Poorly known.
Chestnut-collared Swift
A small swift (13-14 cm) found from Mexico through Central America and South America to Bolivia and Brazil. Dark plumage with a distinctive chestnut collar and throat. Aerial insectivore, often foraging in mixed-species swift flocks over forests and highlands.